KR101534003B1 - Apparatus of monitoring and controling small-scale wind power generation system and the small-scale wind power generation system having the same - Google Patents

Abstract

Disclosed are an apparatus for monitoring and controlling a small-scale wind power generation system and a wind power generation system including the same. The apparatus for monitoring and controlling a small-scale wind power generation system comprises: an analog information receiving unit receiving analog sensor information from sensors attached to small-scale wind power generators included in the small-scale wind power generation system; an operation state determining unit determining an operation state of the small-scale wind power generator by analyzing the received analog sensor information; a small-scale wind power generator controlling unit operating a brake of the small-scale wind power generator and charging a battery with power by controlling the small-scale wind power generator based on the determined operation state; and an information exchanging unit sending a control result received from the small-scale wind power generator controlling unit and the operation state to other apparatus for monitoring and controlling a small-scale wind power generator system. According to the present invention, because anybody can simply control the small-scale wind power generation system through a monitoring and controlling apparatus connected to a small-scale wind power generation apparatus, thereby increasing operation efficiency of the small-scale wind power generation system.

Description

[0001] The present invention relates to a small-scale wind power generation system and a small wind power generation system including the small wind power generation system,

The present invention relates to a small-sized wind power generation system, and more particularly, to a small-sized wind power generation system capable of collecting information of sensors installed in a vertical small-size wind turbine and constructing a small-sized wind power generation system at a low cost by using a controller capable of controlling a vertical small- A small wind turbine system monitoring and control device and a small wind turbine system including such a device and a server and a client exchanging data according to the message exchange method of the IEC 61400-25 standard.

Since the Kyoto Protocol, which mandates the reduction of greenhouse gas emissions, has been officially announced since February 2005, electric power demand has been increasing year by year. Among them, wind power technology has the strongest technology and market competitiveness among various renewable energies and continues to grow at the core of green growth. Therefore, the domestic market is entering the wind power market in several ways, including introducing overseas wind power models and acquiring overseas companies.

In the case of large wind farms, each wind turbine is scattered over a large area and consists of a combination of wind turbines made by several manufacturers. Therefore, when adding a wind turbine or changing the control system, work is required to match the communication environment with existing facilities, and protocol problems arise.

To solve this problem, IEC61850, a substation automation standard protocol based on UCA 2.0 developed in USA EPRI in the early 1990s, was enacted in IEC TC57, and then expanded to wind, solar, hydro, energy storage devices . Based on this, IEC61400-25, the international standard for 2006, was enacted. By standardizing these protocols, it is possible to unify the protocols used between the wind power generation facilities and to easily combine them with existing facilities, and it is possible to have various economic effects such as improving the compatibility and efficiency by standardizing the products.

However, wind turbine systems do not have to be large. Large wind farms have the advantage of producing large quantities of energy, but on the other hand, it is very costly to process large amounts of data received from a large number of equipment, it is difficult to systematically control many facilities, and installation costs are high It is the cause of the rise of power production unit price. Above all, large-scale wind power generation systems require huge costs for site acquisition, which is a major obstacle to the widespread use of power generation systems that use clean energy, wind power.

Therefore, there is an increasing need for a small wind turbine system of compact power plants.

Generally, a small wind power generation system is a system for generating electric power using a wind turbine having a rated capacity of 6W to 30kW. The generator of a small wind power generation system defined by IEC 61400-2 is a rotor swept area, Means a wind power system that generates less electricity with a rated power of less than 200m ² and generates a rated power of about 50kW at a voltage of 1,000V AC or less than 1,500V DC.

In recent years, there has been a tendency to introduce small-sized wind power generation devices that convert green energy into electric energy by supplying environment-friendly power from residential areas such as residential houses and public buildings. Such a compact wind turbine generator is advantageous in that it is smaller in size and easier to install than a large wind turbine generator.

Small wind power has the aspect that it is easy to produce electric power efficiently according to installation position even though the installation area is not wide compared with the solar power generator. However, since there is a danger such as human accidents due to the rotation of the blade, It is mainly installed at the upper part of the streetlight. In addition, there is no consideration for a large-scale monitoring system that operates as a single unit like a home and uses a small wind turbine system. Therefore, there is a need for a large-scale monitoring system that constructs small wind farms and supplies them with power by building small wind farms that do not have a wide installation area and function as landscapes.

Korean Patent Registration No. 10-1155044 describes a small-sized wind turbine generator and a control method thereof, which employs a variable load-type algorithm by adjusting the reverse torque and load of a small wind turbine generator equipped with a gear. This can actively control the rotational speed of a small wind turbine generator and improve its stability. However, in the case of a small wind turbine vertical axis generator, there is no need for a high-cost gear box. Thus, in order to reduce the cost, a vertical wind turbine is generally installed. However, there is still a lack of research on large-scale control and monitoring technology for a small-scale wind turbine system in the vertical axis.

Therefore, there is a desperate need for a technology capable of effectively monitoring a small-sized small wind turbine system.

Korea Patent Registration No. 10-1155044: "Small Wind Power Device and Control Method Thereof"

It is an object of the present invention to simplify the control of the vertical axis small wind turbine device through a monitoring and control device connected to a small wind turbine generator without going through a server and a client. Therefore, the simplification of the system makes it possible to control and monitor wind farms efficiently, even for non-wind farm specialists.

Another object of the present invention is to provide a small wind power generation system that can easily integrate and extend several small wind power generation systems by implementing a small wind power generation system monitoring and control device so as to be able to communicate with each other.

In order to accomplish the above objects, one aspect of the present invention relates to a small wind turbine system monitoring and control apparatus. An apparatus and method for monitoring and controlling a small wind power generation system according to the present invention includes an analog information receiving unit for receiving analog sensor information from sensors attached to small wind turbines included in a small wind power generation system, A small wind turbine generator control section for controlling the small wind turbine generator based on the determined operation state to operate the brakes of the small wind turbine generator or to charge the electric power to the storage battery, And an information exchange unit for transmitting the control result received from the wind power generator control unit to another small wind power generation system monitoring and control apparatus. In particular, the information exchange receives operating conditions and control results for other small wind turbines from other small wind turbine system monitoring and control devices, and the small wind turbine generator control unit is operable to control the operation status and control results for other small wind turbine generators To control the small wind turbine generator. Further, the small wind turbine generator control unit controls the small wind turbine generator based on at least one of the break condition, the wind speed, the generator rotation speed, the output voltage, and the remaining battery power. In addition, the small wind turbine system monitoring and control apparatus further includes a display for displaying operating conditions and control results, and a temperature controller for maintaining the temperature of the small wind turbine system monitoring and control apparatus in a stable range. Preferably, the miniature wind power generator includes a vertical axis wind turbine. Further, the analog sensor information includes at least one of wind turbine brake information, battery status, generator information, rotary wing information, and wind speed data.

According to another aspect of the present invention, there is provided a small wind turbine generator for generating electric power using small wind turbines. The small wind turbine system receives the sensor information from the small wind turbine generator, receives the operation status of the small wind turbine generator from the monitoring and control unit for controlling the small wind turbine generator, and controls the received operation state to the information model Information model (IM), communicates with the server and the server that transmits the information model according to the information exchange model (IEM) conforming to the standard protocol, and receives the information model from the server according to the information exchange model Client. In particular, the monitoring and control unit includes an analog information receiving unit for receiving analog sensor information from sensors attached to small wind turbines, an operating condition determining unit for determining operating conditions of the small wind turbine by analyzing the received analog sensor information, A small wind turbine control unit for controlling the small wind turbine generator based on the operating state to operate the brakes of the small wind turbine generators or to charge the power to the batteries, and an information exchange unit for communicating with the server. Preferably, the small wind turbine generator controller controls the small wind turbine generator further considering operating conditions and control results for other small wind turbines received from the server. The small wind turbine generator control unit controls the small wind turbine generator based on at least one of the braking state, the wind speed, the generator rotation speed, the output voltage, and the remaining battery power. The monitoring and control unit includes a display . Preferably, the monitoring and control unit further includes a temperature regulator for maintaining the temperature of the small wind turbine system monitoring and control apparatus in a stable range. In particular, the small wind turbine includes a vertical axis wind turbine, and the analog sensor information includes at least one of wind turbine break information, battery status, generator information, rotary wing information, and wind speed data.

According to the present invention, since the small wind turbine system can be controlled by anyone using the monitoring and control device connected to the small wind turbine generator, the operating efficiency of the small wind turbine system is improved.

Further, according to the present invention, a small wind power generation system monitoring and control device is installed in each of the small wind power generation systems that can be installed at narrow intervals, and by bundling and controlling several small wind power generation system monitoring and control devices, .

1 is a block diagram conceptually showing a small wind turbine system monitoring and control apparatus according to an embodiment of the present invention.
FIG. 2 is a diagram conceptually illustrating the entire operation for monitoring and controlling the vertical axis small wind turbine apparatus according to the present invention.
3 is a flowchart illustrating a process of controlling a vertical axis wind power generator according to a rated current, an RPM, and an amount of power according to a small wind power system monitoring and control apparatus according to the present invention.
4 is a conceptual diagram illustrating a process of transmitting information collected by the apparatus of FIG. 1 to a server and a client.
5 is a view showing an example of a small wind power generation system according to another aspect of the present invention.
FIG. 6 is a diagram illustrating a hierarchical structure of an information model transmitted between a server and a client in FIG.
7 is a photograph showing an actual implementation example of a small wind power generation system monitoring and control apparatus according to the present invention.

In order to fully understand the present invention, operational advantages of the present invention, and objects achieved by the practice of the present invention, reference should be made to the accompanying drawings and the accompanying drawings which illustrate preferred embodiments of the present invention.

Hereinafter, the present invention will be described in detail with reference to the preferred embodiments of the present invention with reference to the accompanying drawings. However, the present invention can be implemented in various different forms, and is not limited to the embodiments described. In order to clearly describe the present invention, parts that are not related to the description are omitted, and the same reference numerals in the drawings denote the same members.

Throughout the specification, when an element is referred to as "including" an element, it does not exclude other elements unless specifically stated to the contrary. The terms "part", "unit", "module", "block", and the like described in the specification mean units for processing at least one function or operation, And a combination of software.

1 is a block diagram conceptually showing a small wind turbine system monitoring and control apparatus according to an embodiment of the present invention.

1 includes an analog information receiving unit 110, an operation state determination unit 130, a small wind turbine generator control unit 150, an information exchange unit 170, a temperature control unit 150, (180), and a display (190).

The small wind power system monitoring and control apparatus 100 receives analog sensor information from the sensors attached to the wind turbine 200 included in the small wind power generation system. The analog sensor information may include wind turbine brake information, battery status, generator information, rotary wing information, wind speed data, and the like.

The received analog sensor information is analyzed by the operation state determination unit 130. Then, the operation state determination unit 130 determines the operation state of the wind turbine 200 based on the analysis result. The operating conditions may include rated current, RPM, power, wind speed, etc., and include whether the wind turbine 200 is currently in normal operation or in an abnormal operation. Or more specifically, the small wind turbine generator control unit 150 may control the wind turbine 200 based on the break condition, the wind speed, the generator rotation speed, the output voltage, and the remaining amount of the battery. The operation state of the wind turbine 200 will be described later in detail with reference to FIGS. 2 and 3. FIG. Therefore, redundant description is omitted for the sake of simplification of the specification.

When the operation state is determined, the small wind turbine generator control unit 150 receives this from the operation state determination unit 130 and directly controls the wind turbine 200 based on the received operation state. Also, the small wind turbine generator control unit 150 performs a control operation such as operating the wind turbine 200 or charging the battery with electric power. The process of controlling the small wind turbine generator 150 by the small wind turbine generator controller 150 may be displayed to the user through the display 190 or may be transmitted to the external device through the information exchanger 170. [ That is, the information exchange unit 170 transmits the operation status and the control result received from the small wind turbine generator control unit to another small wind turbine system monitoring and control apparatus. The information exchange unit 170 not only transmits the operation state of the wind turbine 200 and the control result of the small wind turbine generator control unit 150 to the outside but also receives the operation state and control result of the other wind turbine from the external apparatus You may. In this case, the small wind turbine generator control unit 150 may control the wind turbine 200 in consideration of not only the operation state of the wind turbine 200 itself, but also the operation state and control result of other external wind turbine.

As described above, the small wind turbine generator monitoring and control apparatus 100 includes an information exchange unit 170 capable of exchanging information with other external apparatuses. The small wind turbine generator control unit 150 controls the small- So as to control the small wind power generation system monitoring and control apparatus 100 in charge of itself. Therefore, it is possible to efficiently control the entire system in consideration of the operation efficiency and operation state of these small wind power generation systems, rather than individually controlling various groups of small wind power generation systems.

The small wind turbine system monitoring and control apparatus 100 operates at all times as long as the wind turbine 200 operates. Therefore, if the temperature rises, the risk of malfunction increases. Therefore, the temperature regulator 180 will cool or heat the small wind turbine system monitoring and control apparatus 100 to maintain the operating temperature of the small wind turbine system monitoring and control apparatus 100 in a stable range.

1, the wind turbine 200 may be a vertical axis wind turbine. Generally, wind turbine systems use horizontal wind turbines to produce large amounts of power. However, since the horizontal axis wind turbine is limited in the installation space, it is difficult to implement the turbine in a small area. However, the vertical axis wind turbine can be installed in a narrow space, and the mechanical configuration is also simpler than the horizontal axis wind turbine. For example, in a vertical axis wind power generation system, it is not necessary to consider the direction of the turbine due to the gear box or yawing, the wind direction sensor, etc. considered in the horizontal axis wind power system. The reason for this is that the horizontal axis turbine has the horizontal axis of the wing rotation axis and the wind is generated by the rotating wing using the force against the wing and is affected by the wind direction but not the vertical axis wind power generator. On the other hand, the vertical axis turbine is capable of generating power irrespective of the direction of the wind because the axis of rotation of the blade is perpendicular to the ground. Therefore, unlike the horizontal axis turbine, there is no need for a yawing, a wind direction information, and a pitch information model for controlling the angle of the blade surface. Therefore, the configuration and operation of the small wind turbine generator control unit 150 can be simplified.

The small wind power generation system monitoring and control apparatus 100 of FIG. 1 transmits simple sensing information and control information through serial-WIFI communication without sending information model data when communicating with a server. Of course, in the IEC 61400-25 standard, data transmission implemented in an information model between a server and a client must be performed. However, in the present invention, the small wind turbine system monitoring and controlling apparatus 100 mounted on a small wind turbine can receive received data as information And does not perform the operation of changing to the model. This is because it is costly to implement data exchange using an information exchange model with data as an information model at the level of a small wind turbine system monitoring and control device (100). In other words, all the information (simple sensor information - changed to serial) is received by the server, changed to the information model, and then served to the client using the information exchange model. This is because large-scale wind turbines have large monitoring and control information even in a single turbine, but there is not much monitoring and control information in small wind turbines. Therefore, it is not necessary for the small wind turbine system monitoring and control apparatus 100 installed in the individual power generation equipment to have the information model conversion function.

Thus, using the small wind turbine system monitoring and control apparatus 100 of FIG. 1, the complex control system of the horizontal axis wind turbine system can be simplified, and the small wind turbine can be efficiently monitored and controlled.

FIG. 2 is a diagram conceptually illustrating the entire operation for monitoring and controlling the vertical axis small wind turbine apparatus according to the present invention.

That is, FIG. 2 shows the operating cycle according to the production of electric power. When the wind speed is increased, the RPM is increased, and the output voltage is also increased. The small wind turbine generator according to the power generation amount and the environment is controlled by braking the wind turbine or adjusting the output according to the rated wind speed, RPM, and output set in the small wind turbine system monitoring and control apparatus according to the present invention.

3 is a flowchart illustrating a process of controlling a vertical axis wind power generator according to a rated current, an RPM, and an amount of power according to a small wind power system monitoring and control apparatus according to the present invention.

First, the wind speed and the RPM output are measured to control the small wind power generation system (S305). Then, it is determined whether the measured value is less than the rated wind speed and RPM (S310).

If the measured value is equal to or lower than the rated wind speed and the RPM, it is determined that battery charging is possible. Therefore, the current brake condition is determined at this time (S315). If the brake is off, the battery is charged (S350). However, if the current brake is on, it indicates that the generator is in a non-operating state even though the wind speed and RPM are normal. Accordingly, the abnormal state is recorded (S320) and the flow returns to step S305. On the other hand, when the wind speed and RPM are abnormal, it means that the wind is blowing like a typhoon. Even in this case, when the wind turbine generator is operated, the generator itself may be overloaded, and serious mechanical fatigue may occur, which may degrade the durability of the product. Therefore, it is preferable not to operate the wind power generator when the wind speed and RPM are abnormal.

The charging of the battery should be performed in consideration of the remaining capacity of the battery. Therefore, it is determined whether the battery is fully charged while charging the battery (S360). If the battery is not yet fully charged, it returns to the initial stage. If the battery charging is completed, there is no need to overcharge the battery, so the battery is disconnected and the brake is turned on (S370).

All such operations are recorded (S335), and the process waits until the remaining amount of the battery is consumed (S340). The reason for waiting for the remaining amount of the battery to be consumed in a certain amount is to prevent the overcharge of the battery and to prevent the wind power generation system from over working. If the battery remaining amount falls below the predetermined value (S345), the operation returns to the initial step to try to charge the battery.

Returning to step S310, if the measured value is not the rated wind speed and the rated RPM, the state of the brake is checked (S325). If the brake is off, the brake is turned on (S330) and the operation is recorded (S335). On the other hand, if the brake is already on, it returns to the initial stage.

As described above, in the present invention, the wind speed, RPM, and output are measured, and when the rated wind speed is higher than RPM, the brake is operated and the generator is operated and the battery is charged only in a normal state. In addition, when the battery is fully charged, the minimum amount of the battery is set according to the location and environment where the small wind turbine is installed, thereby maintaining the continuous power supply.

4 is a conceptual diagram illustrating a process of transmitting information collected by the apparatus of FIG. 1 to a server and a client. Figure 4 represents an information model, an information exchange model, and a data mapping scheme in a protocol based on IEC 61400-25. The information of the wind turbine is acquired by the controller 410, and the controller transmits it to the server 470 of the I / O function through the wireless LAN. Then, the server converts the collected information into an information model and transmits it to the monitoring client 490 as a web service type of SOAP (Simple Object Access Protocol). The server 470 and the client 490 transmit the obtained information through the SOAP message in a standardized manner. Therefore, mutual stable communication is ensured irrespective of the data to be transmitted.

In the present invention, a standard protocol may refer to any standard protocol for exchanging information in a wind turbine system, examples of which are IEC 61850 and IEC 61400-25. IEC 61850, an international standard for substation automation systems, was issued in 2003 and defines the Abstract Communication Service Interface (ACSI) for monitoring wind power systems. IEC 61400-25 is a standard published in 2006 as a standard communication protocol for monitoring and controlling wind power generation systems based on IEC 61850. The IEC 61400-25 standard document focuses on the communication between the wind turbine generator and the Supervisory Control And Data Acquisition (SCADA) system. In other words, IEC 61400-25 is a standard for medium and large wind farms, and is being standardized on the basis of a vertical axis wind power generation system. In order to exchange messages of various types of wind turbines in message exchanges including communication protocols, . The information of the logical node is standardized as an information model and the standardized information is exchanged between the client 490 and the server 470 through an information exchange model.

However, as described above, IEC 61400-25 is designed to be suitable for a large-scale wind power generation system, so there is a lot of resources to be applied to a small wind power generation system. That is, a small wind turbine system is smaller than a relatively large wind turbine monitoring system, so there is no need to implement a monitoring system such as a large wind turbine. In addition, since IEC 61400-25 considers only the horizontal axis wind power generation system, there are no factors to consider in the vertical axis wind power generation system, while unnecessary elements not used in the vertical axis wind power generation system are defined.

Therefore, in the present invention, a compatible protocol may be defined by applying a standard protocol to be suitable for a small wind power generation system to be monitored. Which information model is not required in a vertical axis wind power generation system and which information model is additionally required for monitoring a vertical axis wind power generation system can be determined according to a predefined rule. For example, WTUR-Brake, WBAT-Battery, WGEN-Generator, WROT-Rotor and WNAC-Wind Speed may be required to monitor a vertical axis wind power system. That is, the information about the brakes of the vertical axis wind power generation system is described as a WTUR information model, the battery information is described as a WBAT information model, and the generator information is described as a WGEN information model. Of these, WTUR, WGEN, WROT, and WNAC are the information models used in IEC 61400-25, but WBAT is not in IEC 61400-25, so it is an information model added to the compatible protocol according to the present invention.

Each information model will be described as follows.

- WTUR: Describes the wind turbine general information as one of the information model logical nodes (LN). The lower part of the WTUR contains controllable data, called Brake.

- WBAT: LN expressing the battery inside the wind power generator. WBAT provides data related to the battery, such as voltage, charge state, and is an LN added in the compatibility protocol according to the present invention.

- WGEN: LN representing the generator, including data related to the generator below.

- WROT: An LN indicating the rotary wing, and provides information such as the rotation speed of the wing.

- WNAC: An LN that represents the lid that covers the inside of the wind turbine and provides wind speed data.

Once the information model suitable for the vertical axis wind power generation system is generated, the generated information model is transmitted to the client 490 in accordance with the compatible protocol. At this time, since the compatible protocol communicates using the same information exchange model (IEM) as the standard protocol, it is possible for all the servers 470 and clients 49 according to IEC 61400-25 to use the newly defined The information model can be transmitted and received.

When the information model is received, the client 490 analyzes the transmitted information model and displays the analysis result to the user. Then, the user can easily monitor many small wind turbines simultaneously using the GUI.

FIG. 5 is a diagram illustrating a hierarchical structure of an information model transmitted between a server and a client in FIG.

The information model generated by the server includes a plurality of logical nodes (LN) for one logical device (LD). The information model has a hierarchical format and the top layer represents one real wind turbine, called the Logical Device (LD). There are several logical nodes (LN) underneath the LD, which represent internal subsystems. Each logical node LN also has several data classes, which also have fields such as name, Common Data Class (CDC), description, persistence, and coercivity.

These fields may also have a lower hierarchy, for example the CDC may have a name, type, functional limit, trigger option, view / scope, and coercivity field. In this manner, the information model is expressed hierarchically to improve the accessibility to the information required by the information model. In the present invention, unnecessary information models are abstracted on the basis of the information model, and additional information models are additionally added to ensure compatibility and accessibility.

5 is a view showing an example of a small wind power generation system according to another aspect of the present invention.

Each small wind turbine basically generates electricity and supplies power to the battery, and a device for monitoring and controlling it to prevent the over current or battery overcharging problem is needed. In addition, wind turbine installation sites are frequent wind movements and require control to cope with wind and typhoon situations. If a plurality of small wind turbines are installed, a mechanism for collectively monitoring and controlling the small wind turbines is required. Accordingly, the present invention is directed to a device for managing a vertical axis small wind turbine system and a power system do.

The miniature wind power generation system 500 shown in FIG. 5 comprises a wind power generator 510, a server 570, and a client 590. In particular, FIG. 5 illustrates that the wind turbine 510 includes a controller 530 therein. However, the controller 530 does not necessarily have to be installed inside the wind turbine 510, and it suffices that the controller 530 can receive the analog sensor information of the wind turbine 510 from outside the wind turbine 510.

The state of the wind speed, RPM, brake, and generator installed in the vertical axis small wind power generator 510 is transmitted to the controller 530 as an analog signal. The controller 530 then receives and analyzes the analog sensor information and directly controls the brake of the wind power generator 510 if necessary. Also, the electric power generated from the wind turbine generator 510 is charged into a plurality of batteries, and the charged electric power is converted into AC or DC through the controller 530 and supplied to the application system. In this case, the controller 530 can also determine whether to charge the large capacity battery or supply power to the application system. To perform this operation, the controller 530 includes a memory card, a display, a power supply, and an MCU. In addition, the controller 530 includes a voltage converter, a temperature sensor, a cooling and a heating module. The cooling and heating module maintains a constant operating temperature of the controller 530 so that the operating temperature of the controller 530 does not fall within an abnormal range. The memory card records information on the operation history of the wind power generator 510. The display displays the operation state of the wind power generator 510 and the control result of the current controller 530 to the user. The power supply is a device for supplying auxiliary power to the controller 530 when the power supplied to the controller 530 is cut off. The information obtained by the controller 530 is transmitted to the server 570 via the wireless LAN, and the server 570 changes the information to an information model based on IEC 61400-25 for service, (Information Exchange Model) to the client 590.

The server 570 includes a SOAP server and an I / O server. The server 570 includes a function of synchronizing time between the controller and the client 590 via I / O. The wind turbine information (wTurbine) can be recorded in the object list as a wind turbine object. The SOAP server sends the information model to the client 590 using IEM. A logical device (LD) recorded in the SOAP will be described later with reference to Fig.

The client 590 represents the provided information model as an object, communicates with the server at a predetermined time interval, and updates the information. In addition, the client 590 manages the history of the system by storing the transmission / reception data information, the account information, and the system configuration information in a database.

FIG. 6 is a diagram illustrating a hierarchical structure of an information model transmitted between a server and a client in FIG.

As shown in FIG. 4, the information model generated by the server includes a plurality of logical nodes (LN) for one logical device (LD). The information model has a hierarchical format and the top layer represents one real wind turbine, called the Logical Device (LD). There are several logical nodes (LN) underneath the LD, which represent internal subsystems. Each logical node LN also has several data classes, which also have fields such as name, Common Data Class (CDC), description, persistence, and coercivity. These fields may also have a lower hierarchy, for example the CDC may have a name, type, functional limit, trigger option, view / scope, and coercivity field. In this manner, the information model is expressed hierarchically to improve the accessibility to the information required by the information model. In the present invention, unnecessary information models are abstracted on the basis of the information model, and additional information models are additionally added to ensure compatibility and accessibility.

7 is a photograph showing an actual implementation example of a small wind power generation system monitoring and control apparatus according to the present invention.

As shown in Fig. 7, the device according to the present invention is capable of independently monitoring and controlling a small wind turbine system at a low cost as well as a small size. In addition, these devices ensure that several small wind turbine systems operate organically through intercommunication.

The small wind turbine system monitoring and control apparatus embodied in FIG. 7 includes LEDs for indicating Rx, Tx, on / off status of brakes, rated RPM, and rated wind speed of wireless communication, State. EH, the brake is controlled via the emergency brake switch.

Furthermore, the small wind power system monitoring and control device displays the output and the remaining battery level through the LED display, and thereby grasps the status of individual generators at the site where the wind turbine generator is installed. The functions of these small wind turbine monitoring and control devices are summarized in Table 1 below.

As described above, the small wind turbine system monitoring and control apparatus according to the present invention can directly monitor and control a small wind turbine installed when installing a plurality of vertical axis small wind turbines at locations where large wind turbine equipment can not be installed. have. In addition, since it is possible to group and control several small wind turbine monitoring and control devices, it is possible to expand the small wind turbine system, which is used individually for household use, through the construction of a small wind turbine complex, Can be constructed.

Simplification of control and monitoring also reduces the cost of system implementation and facilitates expansion of small wind turbines through wireless communication between controller and server.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art. For example,

In addition, the method according to the present invention can be embodied as computer-readable code on a computer-readable recording medium. A computer-readable recording medium may include any type of recording device that stores data that can be read by a computer system. Examples of the computer-readable recording medium include a ROM, a RAM, a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like, and may be implemented in the form of a carrier wave (for example, transmission via the Internet) . The computer readable recording medium may also store computer readable code that may be executed in a distributed manner by a distributed computer system connected to the network.

Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

The present invention can be applied to a small wind turbine system employing a vertical turbine.

Claims (12)

delete delete delete delete As a small wind power system monitoring and control device,
Receiving analog sensor information including at least one of vertical axis wind turbine brake information, battery status, generator information, rotary wing information, and wind speed data from sensors attached to vertical small wind turbines included in the small wind power generation system An analog information receiver for receiving the analog information;
An operating state determination unit for analyzing the received analog sensor information to determine an operating state of the vertical axis small wind turbine generator;
A small wind turbine generator controller for controlling the vertical axis small wind turbine generator based on the determined operation state to operate the brakes of the vertical axis small wind turbine generator or to charge electric power to the storage battery; And
And an information exchange unit for transmitting the operation status and the control result received from the small wind turbine generator control unit to another small wind turbine system monitoring and control apparatus,
The information exchange unit converts the operation state into an information model (IM) according to a standard protocol, and transmits the information through an information exchange model (IEM) Send and receive models,
The information model converted by the server includes:
One of the Logical Nodes (LNs) describes the general information of the wind turbine, the WTUR that contains the controllable data, called the Brake,
A logic node (LN) for representing a battery existing inside a wind turbine, WBAT for providing data related to a battery such as a voltage and a charging state,
A logic node (LN) representing a generator, WGEN comprising data associated with the generator at the bottom,
A logic node (LN) representing a rotary vane of a vertical axis wind turbine, the WROT providing information such as the rotational speed of the vane, and
A logic node (LN) representing a lid covering the interior of the wind turbine, the WNAC providing wind speed data,
The small wind turbine generator control unit receives the data for the other vertical axis small wind turbine transmitted from the server through the information exchanging unit and controls the vertical axis small wind turbine in consideration of the operation state and the control result of the other vertical small- Wherein the control unit controls the operation of the small wind turbine generator.
6. The method of claim 5,
Further comprising a display for receiving and displaying the operating status and control results from the server into an information exchange model.
A compact wind turbine system for generating power using vertical axis small wind turbines,
A monitoring and control unit receiving sensor information from the vertical axis small wind turbine generator and controlling the vertical axis small wind turbine generator;
Receiving the operating state of the vertical axis small wind turbine generator from the monitoring and control unit, converting the received operating state into an information model (IM) according to a standard protocol, and generating an information exchange model ; ≪ / RTI >IEM); And
And a client communicating with the server and receiving the information model from the server according to the information exchange model,
Wherein the monitoring and control unit comprises:
An analog information receiver for receiving analog sensor information including at least one of wind turbine brake information, battery status, generator information, rotary wing information, and wind speed data from sensors attached to the vertical axis small wind turbines;
An operating state determination unit for analyzing the received analog sensor information to determine an operating state of the vertical axis small wind turbine generator;
A small wind turbine generator controller for controlling the vertical axis small wind turbine generator based on the determined operation state to operate the brakes of the vertical axis small wind turbine generator or to charge electric power to the storage battery; And
And an information exchange unit for communicating with the server,
The vertical axis small wind turbine generator control unit controls the small wind turbine generator further considering the operation state and the control result of another small wind turbine received from the server,
The information model converted by the server includes:
One of the Logical Nodes (LNs) describes the general information of the wind turbine, the WTUR that contains the controllable data, called the Brake,
A logic node (LN) for representing a battery existing inside a wind turbine, WBAT for providing data related to a battery such as a voltage and a charging state,
A logic node (LN) representing a generator, WGEN comprising data associated with the generator at the bottom,
A logic node (LN) representing a rotary vane of a vertical axis wind turbine, the WROT providing information such as the rotational speed of the vane, and
Wherein the WNAC is a logic node (LN) representing a lid that covers the interior of the wind turbine and provides wind speed data.
8. The method of claim 7,
Wherein the small wind power generator control unit controls the vertical small wind power generator based on at least one of a break condition, a wind speed, a generator rotation speed, an output voltage, and a remaining battery level. 9. The apparatus of claim 8, wherein the monitoring and control unit comprises:
Further comprising a display for receiving and displaying the operating status and control results from the server to an information exchange model.
8. The apparatus of claim 7, wherein the monitoring and control unit comprises:
Further comprising a temperature regulator for maintaining the temperature of the small wind turbine system monitoring and control device in a stable range. delete delete

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